Weighting mechanism employed in the roller systems of ring spinning, drawing, or spee frames and like textile machines



Feb. 16, J L T WEIGHTING MECHANISM EMPLOYED IN THE ROLLER SYSTEMS OFRING SPINNING,

DRAWING, 0R SPEED FRAMES AND LIKE TEXTILE MACHINES Filed Sept. 4, 1935 12 SheetEi-Sheet l c3, Caz/26w? an I WWW WTTOP/VEX:

Feb. 16, 1937.

. J. CALVERT 2,071,023 WEIGHTING MECHANISM EMPLOYED IN THE ROLLERSYSTEMS OF RING SPINNING,

DRAWING, OR SPEED FRAMES AND LIKE TEXTILE MACHINES Filed Sept. 4, 1955 2Sheets-Sheet 2 Patented Feb. 16, 1937 PATENT OFFICE WEIGHTING MECHANISMEMPLOYED IN THE ROLLER SYSTEMS OF RING SPIN- NING, DRAWING, OR- SPEEDFRAMES AND LIKE TEXTILE MACHINES .James Calvert, Accringtom l lngland,assignpr to Howard and Bullough Limited, L aneashire,

England Application September 4, .1335, Serial No. 39,160

In Great Britain February 22, 1935 2 Claims.

The invention relates to ring spinning, drawing, speed or other liketextile frames or machines, and conveyor band systems, with which rollersystems areemployed, and has for object to provide an improved andeffective weighting device .for said rollers, such weighting devicebeing of the type comprising a saddle bearing upon the rollers to beweighted, a weight suspended from said saddle by a stirrup pivoted tothe former, and a hand-operable pivoted lever associated with thestirrup and adapted for connection thereto and disconnection therefromso as to impose the weight thereon or remove it therefrom, the weightremaining mechanically supported throughout the connecting ordisconnecting operation.

According to the invention, a weighting mechanism of the said type is soarranged that an imaginary line, connecting the pivotal axis of thehand-lever to the point of contact between "said lever and the stirrup,is at right angles to an imaginary line connecting the latter point tothe axis about which the stirrup is pivoted on the saddle.

We are aware that weighting mechanisms not of the ,type hereinbeforedefined are known in which aline joining the point of contact betweenthe stirrup and the Weight-supporting lever to the pivotal axis of saidlever isat rightangles to a'line joining the said point of contact tothe point at which the stirrup is connected to the saddle.

Various embodiments of the invention are illustrated in the accompanyingdrawings, whereof Fig. l is a-sectional elevation of a drafting rollerstand suitablefor use in an ordinaryring spinning frame andincorporating a weighting device according-to the'present invention.Fig. 2 is a view at right angles to Fig. 3, which is a view of a portionof detail in'Fig. 1, but in a changed position, as hereinafterdescribed. Fig. 4 is aview similar to Fig. 1, illustrating theapplication of the invention to a speed frame. Figs. 5, 6, 7, 8, and 9show modifications of the invention, Fig. 7 being at right angles toFig. 6.

In Figs. 1 to 3 inclusive, the roller stand is indicated at I, supportedby a part of the beam of the frame at'2, and saddles of known characterare shownat 3 and l respectively. In pivoted con- .nectionw'ith thesaddle-1 is a stirrup 5, which is seen to be situated between therows'of rollers indicated and-remote from the ,front of the roller standl,..show n at the left hand side of the said flgure, As is well known,it is customary for frame and is positioned towards the front of thestirrup 5. Said lever device H is provided with a finger-hole l-lx,whereby it may be raised or low- .ered, and the weight 9 is connected bya link [2 to a projecting portion, as, shown.

The. device l l, the lower partof which is shown in broken form at Fig.3, has a cavity at l3 through which the lower and hooked end of thestirrup 5 normally passes. This hooked end is capable of engaging across-bar or member y whereby the pressuredue to the weight 9 istransmitted to the rollers 6, I, and 8.

In Fig. 1, two axesor lines of reference are shown at A-V-A and B-Brespectively, the former being parallel to the imaginary line throughthe centres of the axes of the rollers 6, I, and 8 beforenamed, andpassing through the axis of shaft l0 and the point of contact betweenthe bar I ly and the stirrup 5. The line B-B is at right angles 'to thefirst line A A mentioned, and passes through the point of contactbetweenthe stirrup ing good results in weighting.

When it is required to relieve the saddles from 30 5 and the cross-bar Hand the axis about which the pressure of the weight 9, e. g; when therollers below said saddles need attention, or for other reasons,thestirrup 5 is disengaged from the devicel I in a simple manner byraising said de- Vice 1 l on its pivot or shaft ID with the aid of thefinger-hole llx, until thesaid-device ll reaches a position relativelytothe stirrup 5, substantially as indicated in Fig. 3. At such position,the saddlesand stirrup may be removed together in an upward direction,since the hooked end of the iwhile the stirrup and saddles are removedfrom the frame, means may be provided sothat the lever device H issuppcrtedin a position, to keep the finger-hOIe llx convenientlysituated frame.

stirrup is obviously capable of being passed through the slot or cavityl3.

When the stirrup 5 and the device I l are to be reconnected, the saiddevice ll may be slightly raised on its pivot or shaft I to enable thelower hooked end of the stirrup to pass through the aperture or slot 13,and the parts will automatically engage on the device and its weightbeing allowed to fall to the level at which the weighting effect comesupon the hooked'end of the stirrup.

The position of the axis of the shaft II] can be adjusted in anysuitable manner, as desired. One form of means for this purpose, asshown in Fig. 1, comprises a slotted extension piece l5 connected withthe stand by means of a bolt IE or the like, and carrying the shaft Ill,and the movement of said member I5, the bolt I6 being temporarilyreleased, enables the requisite adjustment to be made, the said boltbeing subsequently re-tightened.

The saddles are, of course, provided with means whereby the roller-axlesbelow may be suitably lubricated. The arrangement shown in Fig, 1 isfurnished with a channel 4x in the saddle 4, connecting the oil holesindicated, which lead to the axles of the rollers and 8.

Reference to Fig. l aforesaid will show that the device throughout allthe movements described, is mechanically supported by shaft I0 from thebeam 2. The stirrup 5 and the saddles 3 and 4 may conveniently be formedintegrally, as shown, although they may be individual units, if desired.It will also be seen that the upper surface of the beam 2 in thearrangement illustrated is kept quite clear of impedimenta, sofacilitating cleaning or other operations of or upon the top part ofthesaid beam.

The rearward position 'of the stirrup 5 also enables an ordinary clearerroller, as shown at H, to be removed. A support l8, shown here in theform of a spring and carrying theaxle. of roller II, is so shaped thatthe disengagement of the axle of the roller ll enables such roller to beremoved backwards bodily until it reaches the bend |8X of the saidsupport I8, after which the said roller axle may be passed down untilclear of the.

lower end [B of said support 3, when it may be brought forward forcomplete removal from the frame. The roller I! may be replaced byreversing the movements hereinbefore described. Additional details, suchas the adjustment of the weight 9 on link I2, may be incorporated ifdesired.

The means herein described enable the use of a weight of smallerdimensions than ordinarily adopted, thus enhancing the compactness ofthe arrangement.

It is to be understood that there is a stirrup and lever device witheach weighting means for each set of rollers, the latter being arrangedin series form along the length of the frame in the customary manner. Insome cases, a spring may be employed in lieu of a weight, such springbeing anchored to some fixed part of the frame.

With reference to Fig. 4, the saddles are indicated at IS, the stirrupat 20, and a lever device according to the invention at 2|. In thisarrangement the stirrup 20 is behind the rollers, and not between therows of rollers as shown in Fig. 1. In the arrangement illustrated inFig. 4, the device 2| is freely mounted upon a fulcrumshaft 22 and afinger-hole in the device 2| is indicated at 2'):-

A hooked part 2| of the device 2| carries a link 23 to which a weight 24is attached. A cross-bar 2|z of the said device 2| is adapted to engagewith the hooked end of the stirrup 20', and it will be seen that thedevice 2| can be moved about the axis of shaft 22 by means of the saidfinger-hole 2|x, thus enabling the stirrup to be disengaged from thedevice 2| for weight-relieving purposes, as hereinbefore described withreference to Fig, 1.

In Fig. 5, a link 25 is shown connecting a stirrup 26 to a lever device21 according to the invention, the latter being pivoted about the axisof a shaft 28 which is supported by a bracket 29 attached to the beam 2.A finger-rest or hole in thedevice 21 is indicated at 21x for use in themanner already explained with reference to Fig. 1, and a suitable weightor weights may be suspended from the hooked or curved end 21 of thedevice as required.

In Figs. 6 and '7 a stirrup 30 of hooked form is shown connecteddirectly to an inclined part 3|: of a lever device about a shaft 3lqcarried by a support attached to the beam 2. Such device 3| is alsoprovided with recessed or like parts at 3|z forming positions from whicha weight or weights (not indicated) may be suspended in any convenientmanner, e. g. by a link or links. A finger-rest or projection 3| may bepulled towards the front of the frame for the purpose of relieving thestirrup of the applied weight, when the stirrup 30 may readily bedisconnected from the device 3|, as hereinbefore described withreference to Fig. 1.

In the embodiment last mentioned, the connection between the stirrup 30and the lever device 3| is made at a point above the level of the beam2, but in the embodiment illustrated in Fig. 8 the point of connectionis below the level of the beam, a projection 32x on a lever device 32 being capable of engagement with a recessed or hooked part in the stirrup33. The lever device 32 is pivoted at 34 to a bracket 35 attached to theunder side of the beam 2 aforesaid, and slots for link connectionbetween the lever device 32 and a weight or weights (not shown) areprovided in an extension of the former at 32;. Above the level of thebeam 2 and at the upper end of the device 32, the latter is adapted at32y for operation by the finger when the stirrup and saddles inconnection with it are to be relieved of weight and temporarily removed.

In Fig. 9 an arrangement somewhat similar to Fig. 8 is illustrated, butthe connection between the stirrup 36 and the lever device 31 is madeabove the level of the beam 2. In this example, a projection 31 of thedevice 31 forms a slot for positioning the stirrup 36, and the device 31is pivoted at 38 to a bracket 39 attached to the beam 2. Slots forattachment of means for carrying a weight or weights (not shown) areindicated at 312.

What I claim as my invention and desire to secure by Letters Patentis 1. A weighting mechanism for roller systems of ring spinning, drawingor speed frames and other textile machines employing the same,comprising a saddle bearing on the rollers of the mechanism, a memberpivotally suspended from the saddle and having a hook portion at itslower end, a pivotally mounted lever movable in a path parallel to thehook portion of said member and having a slotted portion adapted toreceive said hook portion, means in said slotted portion of the leveradapted to engage said hook portion, and a weight bearing on the leverfor pulling the hook member and saddle downwardly.

2. A weighting mechannism for roller systemsand adapted to engage thehook portion of said pivotally suspended member, said slot being of alength sufiicient to permit forward and rearward movement of the hookportion of the pivotally suspendedv member therein to respectively 5engage and d sengage said cross bar, and a. weight bearing on the'leverfor pulling the hook member and saddle downwardly.

JAMES CALVERT.

